JPH072130Y2 - Twin-drum type continuous strip casting equipment - Google Patents
Twin-drum type continuous strip casting equipmentInfo
- Publication number
- JPH072130Y2 JPH072130Y2 JP8451089U JP8451089U JPH072130Y2 JP H072130 Y2 JPH072130 Y2 JP H072130Y2 JP 8451089 U JP8451089 U JP 8451089U JP 8451089 U JP8451089 U JP 8451089U JP H072130 Y2 JPH072130 Y2 JP H072130Y2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- gas
- twin
- pair
- drum type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、湯溜り部をガスシールするシールチャンバを
改良した双ドラム式帯板連続鋳造装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a twin-drum type continuous strip casting apparatus with an improved seal chamber for gas-sealing a molten metal pool.
第３図は、従来の双ドラム式薄帯板連続鋳造装置一例の
要部を示す破断正面図である。FIG. 3 is a cutaway front view showing an essential part of an example of a conventional twin drum type continuous strip casting apparatus.
第３図において、101は１対の水冷ドラムであり、薄帯
鋼Ｓの板厚Ｔ相当の隙間を形成して軸受102に支承さ
れ、図示しない駆動装置によって互いに反対方向に同一
速度で回転する。103は１対のサイドダムであり、双方
の水冷ドラム101の側面に押圧されて摺動するように装
設され、双方の水冷ロール101の外周面とで湯溜り部110
が形成されている。104はシールチャンバであり、湯溜
り部110を封止するように装設されている。そしてその
上面にはアルゴンガス供給口105が設けられている。106
は浸漬ノズルであり、シールチャンバ104の上部を貫通
し、湯溜り部110の溶鋼Ｒに浸漬するように装設されて
いる。In FIG. 3, 101 is a pair of water-cooled drums, which are supported by bearings 102 with a gap corresponding to the plate thickness T of the thin steel strip S supported by bearings 102, and rotate at the same speed in opposite directions by a driving device (not shown). . Reference numeral 103 denotes a pair of side dams, which are installed so as to be pressed and slid on the side surfaces of both water-cooling drums 101.
Are formed. 104 is a seal chamber, which is installed so as to seal the pool 110. An argon gas supply port 105 is provided on the upper surface thereof. 106
Is a submerged nozzle, which penetrates the upper portion of the seal chamber 104 and is submerged in the molten steel R of the molten metal pool 110.
この装置では、アルゴンガス供給口105からシールチャ
ンバ104内にアルゴンガスＡを供給して充満し、双方の
水冷ドラム101を回転しながら、図示しないタンディシ
ュ内の溶鋼Ｒを浸漬ノズル106から湯溜り部110に供給す
る。この溶鋼Ｒを水冷ドラム101の外周面で冷却し、連
続して凝固させてシェルS1を形成し、下方へ引抜いて薄
帯鋼Ｓを連続鋳造する。In this apparatus, argon gas A is supplied from the argon gas supply port 105 into the seal chamber 104 to fill it, and while both water cooling drums 101 are rotating, molten steel R in a tundish (not shown) is immersed from a dipping nozzle 106 into a molten metal pool Supply to 110. The molten steel R is cooled on the outer peripheral surface of the water cooling drum 101 and continuously solidified to form a shell S 1, which is drawn downward to continuously cast the thin strip steel S.
ところが、前記従来の装置では、前述のように、湯溜り
部のガスシールにアルゴンガスを使用して無酸化雰囲気
としているが、このアルゴンガスは、冷却ドラムと溶融
金属の接触部に侵入し、しかも溶融金属に溶込まないの
で、冷却ドラムの外周面と溶融金属から形成されたシェ
ルの間にアルゴンガス膜を生成する。However, in the conventional device, as described above, an argon gas is used for the gas seal of the molten metal pool to provide a non-oxidizing atmosphere, but this argon gas penetrates into the contact portion between the cooling drum and the molten metal, Moreover, since it does not penetrate into the molten metal, an argon gas film is formed between the outer peripheral surface of the cooling drum and the shell formed from the molten metal.
このアルゴンガス膜の膜厚は、シェルによる加熱のため
膨張して不均一になり、シェルが不均一に凝固して鋳造
されるので、薄帯板の板形状、表面性状等が低下する。The thickness of the argon gas film expands due to heating by the shell and becomes nonuniform, and the shell is nonuniformly solidified and cast, so that the plate shape and surface quality of the thin strip plate deteriorate.
本考案は上記課題を解決するために提案されたものであ
り、双ドラム式帯板連続鋳造装置によって連続鋳造され
る帯板の板形状、表面性状を向上させる装置を提供する
ことを目的とする。The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a device for improving the plate shape and surface quality of a strip plate continuously cast by a twin-drum type strip continuous casting device. .
前記目的を達成するための本考案の双ドラム式帯板連続
鋳造装置は、回転する１対の冷却ドラムと１対のサイド
ダムとで形成した湯溜り部をシールチャンバで覆って不
活性ガスでシールし、溶融金属を連続的に供給して帯板
を連続鋳造する装置において、前記各々の冷却ドラムの
外周面との間にガスを流通させ得る隙間をそれぞれ形成
しかつこの隙間の開口部が前記湯溜り部の溶融金属に浸
漬するように前記シールチャンバに内装した１対のバッ
フルと、前記双方の隙間にそれぞれ連結した溶融金属可
溶ガス供給手段とを具備したものである。In order to achieve the above-mentioned object, the twin drum strip continuous casting apparatus of the present invention covers a molten metal pool portion formed by a pair of rotating cooling drums and a pair of side dams with a sealing chamber and sealing with an inert gas. In the apparatus for continuously supplying the molten metal to continuously cast the strip plate, a gap for allowing gas to flow is formed between the cooling drum and the outer peripheral surface of each cooling drum, and the opening of the gap is The seal chamber is provided with a pair of baffles so as to be immersed in the molten metal in the molten metal pool, and a molten metal-soluble gas supply means connected to each of the gaps.
本考案では、帯板を連続鋳造するに際し、湯溜り部に溶
融金属を供給し、シールチャンバ内に不活性ガスを供給
して前記溶融金属の湯面をシールすると共に、溶融金属
可溶ガス供給手段からバッフルと冷却ドラムとの隙間を
介して溶融金属の冷却ドラムの外周面との接触部に溶融
金属可溶ガスを供給してシールする。According to the present invention, when continuously casting a strip, a molten metal is supplied to a molten metal pool portion, an inert gas is supplied to a sealing chamber to seal the molten metal surface, and a molten metal soluble gas supply is provided. The molten metal-soluble gas is supplied from the means to the contact portion of the molten metal with the outer peripheral surface of the cooling drum through the gap between the baffle and the cooling drum to seal the molten metal.
このとき、溶融金属と冷却ドラムの外周面との間に侵入
した溶融金属可溶ガスは溶融金属に溶込み、ガス膜の生
成が防止され、鋳造される帯状板の板形状、表面性状等
が低下することがない。At this time, the molten metal-soluble gas that has entered between the molten metal and the outer peripheral surface of the cooling drum is melted into the molten metal, the generation of a gas film is prevented, and the plate shape and surface texture of the cast strip plate are It never drops.
一方、湯溜り部の溶融金属湯面の大部分は溶融金属に溶
込まない不活性ガスによってシールされていて、溶融金
属と溶融金属可溶ガスとが接触する面積は微小であるた
めに、溶融金属中の溶融ガス濃度はほとんど上昇しな
い。On the other hand, most of the molten metal surface of the molten metal pool is sealed by an inert gas that does not penetrate into the molten metal, and the contact area between the molten metal and the molten metal-soluble gas is very small. The molten gas concentration in the metal hardly increases.
以下、本考案の一実施例を第１図及び第２図によって具
体的に説明するが、第３図に示される従来技術に係る装
置と同一の部材には同一の符号を付し、重複する説明を
省略する。Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. The same members as those of the apparatus according to the prior art shown in FIG. The description is omitted.
第１図及び第２図において、１は１対のバッフルであ
り、湯溜り部110の双方の水冷ドラム101の外周面との間
にそれぞれ所定の隙間を形成し、その下端部に溶鋼Ｒに
浸漬するように、シールチャンバ104の内部に固設され
ている。５は１対の窒素ガス供給口であり、シールチャ
ンバ104の両側面を貫通して双方のバッフル１にそれぞ
れ固着され、バッフル１と水冷ドラム101との間の間隙
に開口しており、図示しない窒素ガス供給装置に連結さ
れている。In FIG. 1 and FIG. 2, 1 is a pair of baffles, each of which forms a predetermined gap between the outer peripheral surface of both water cooling drums 101 of the pool 110, and the molten steel R is formed at the lower end thereof. It is fixed inside the seal chamber 104 so as to be immersed. Reference numeral 5 denotes a pair of nitrogen gas supply ports, which penetrate both side surfaces of the seal chamber 104 and are fixed to both baffles 1 respectively, and are opened in a gap between the baffle 1 and the water cooling drum 101, which is not shown. It is connected to a nitrogen gas supply device.
本実施例では、薄帯鋼Ｓを連続鋳造するに際し、アルゴ
ンガス供給口105からシールチャンバ104内にアルゴンガ
スＡを供給して充満し、双方の水冷ドラム101を回転し
ながら、溶鋼Ｒを浸漬ノズル106から湯溜り部101に供給
する。次いで窒素ガス供給口５からバッフル１と水冷ド
ラム101の外周面との間に窒素ガスＮを前記アルゴンガ
スＡとほぼ同じ圧力で供給して溶鋼Ｒの表面をシール
し、溶鋼Ｒを水冷ドラム101で冷却して凝固させ、シュ
ルS1を形成して下方へ引抜く。In the present embodiment, when continuously casting the thin steel strip S, the argon gas A is supplied from the argon gas supply port 105 into the seal chamber 104 so that the seal chamber 104 is filled with the molten steel R while the water cooling drums 101 are rotated. The water is supplied from the nozzle 106 to the basin 101. Then, nitrogen gas N is supplied from the nitrogen gas supply port 5 between the baffle 1 and the outer peripheral surface of the water cooling drum 101 at a pressure substantially the same as that of the argon gas A to seal the surface of the molten steel R, and the molten steel R is cooled by the water cooling drum 101. Then, it is cooled and solidified to form Sur S 1 and then pulled downward.
このとき、窒素ガスＮは、水冷ドラム101と溶鋼Ｒの接
触部に侵入するが溶鋼Ｒに溶込み、ガス膜の生成を防止
し、鋳造される板状体の板形状、表面性状等の低下を防
ぐことができる。At this time, the nitrogen gas N penetrates into the contact portion between the water cooling drum 101 and the molten steel R, but penetrates into the molten steel R to prevent the formation of a gas film, and reduces the plate shape and surface quality of the plate body to be cast. Can be prevented.
一方、湯溜り部110の溶鋼Ｒ湯面の大部分は、溶鋼Ｒに
溶込まないアルゴンガスＡでシールされていて、溶鋼Ｒ
が窒素ガスＮと接触する面積は微小なので溶鋼Ｒ中の溶
融ガス濃度はほとんど上昇せず、鋳造される板状体の品
質に影響を与えることがない。On the other hand, most of the molten steel R molten metal surface of the molten metal pool 110 is sealed with the argon gas A which does not penetrate into the molten steel R,
Since the area in contact with the nitrogen gas N is minute, the concentration of the molten gas in the molten steel R hardly rises and does not affect the quality of the plate-shaped body to be cast.
なお、本考案に使用されるガスは、上記実施例で使用さ
れたものに限定されるものではなく、シールガスとして
はアルゴンの外に各種の不活性ガスを用いてもよく、ま
た溶融金属可溶ガスとしては窒素の外に炭酸ガス、空気
或いはこれらと不活性ガスとの混合ガスを用いてもよ
い。The gas used in the present invention is not limited to the gas used in the above embodiment, and various inert gases other than argon may be used as the seal gas, and a molten metal may be used. As the dissolved gas, carbon dioxide gas, air, or a mixed gas of these and an inert gas may be used in addition to nitrogen.
以上詳細に説明したように、本考案では、シールチャン
バ内の１対のバッフルと双方の冷却ドラム外周面との間
の隙間から溶融金属の湯面の前記冷却ドラム外周面との
接触部に溶融金属可溶ガスを供給することにより、溶融
金属が凝固してシェルを形成する際に、侵入した溶融金
属可溶ガスは溶融金属に溶込み、冷却ドラムとシェルと
の間にガス膜を生成することがない。As described above in detail, in the present invention, the molten metal melts from the gap between the pair of baffles in the seal chamber and the outer peripheral surfaces of both cooling drums to the contact portion with the outer peripheral surface of the cooling drum. By supplying the metal-soluble gas, when the molten metal solidifies to form a shell, the invading molten metal-soluble gas dissolves in the molten metal and forms a gas film between the cooling drum and the shell. Never.
したがって、シェルと冷却ドラム外周面との接触が均一
になり、連続鋳造される帯板の板形状及び表面性状を向
上させることができる。Therefore, contact between the shell and the outer peripheral surface of the cooling drum becomes uniform, and the plate shape and surface quality of the continuously cast strip can be improved.
第１図は本考案の一実施例である双ドラム式薄帯板連続
鋳造装置の要部を示す破断正面図、第２図は第１図のII
-II線断面、第３図は従来の双ドラム式薄帯板連続鋳造
装置の一例の要部を示す破断正面図である。 １……バッフル、５……窒素ガス供給口、101……水冷
ドラム、103……サイドダム、104……シールチャンバ、
105……アルゴンガス供給口、110……湯溜り部、Ａ……
アルゴンガス、Ｎ……窒素ガス、Ｒ……溶鋼、Ｓ……薄
帯鋼、S1……シェル。FIG. 1 is a cutaway front view showing an essential part of a twin-drum type thin strip continuous casting apparatus which is an embodiment of the present invention, and FIG. 2 is a II of FIG.
-II line cross section, FIG. 3 is a fracture | rupture front view which shows the principal part of an example of the conventional twin drum type thin strip plate continuous casting apparatus. 1 ... Baffle, 5 ... Nitrogen gas supply port, 101 ... Water cooling drum, 103 ... Side dam, 104 ... Seal chamber,
105 ... Argon gas supply port, 110 ... Hot water pool, A ...
Argon gas, N ...... nitrogen gas, R ...... molten steel, S ...... thin steel strip, S 1 ...... shell.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 古谷 尚 山口県光市大字島田3434番地 新日本製鐵 株式会社光製鐵所内 (72)考案者 竹内 英麿 山口県光市大字島田3434番地 新日本製鐵 株式会社光製鐵所内 (72)考案者 岡 秀毅 山口県光市大字島田3434番地 新日本製鐵 株式会社光製鐵所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nao Furuya, 3434 Shimada, Hitsu-shi, Yamaguchi Pref., Nippon Steel Co., Ltd., Hikari Works, Ltd. Inside the Hikari Steel Works, Ltd. (72) Inventor Hideki Oka 3434 Shimada, Hikari City, Yamaguchi Prefecture Nippon Steel Works Hikari Steel Co., Ltd.
Claims (1)
ダムとで形成した湯溜り部をシールチャンバで被覆して
不活性ガスでシールし、溶融金属を連続的に供給して帯
板を連続鋳造する装置において、前記各々の冷却ドラム
の外周面との間にガス流通可能な隙間をそれぞれ形成し
かつこの隙間の開口部が前記湯溜り部の溶融金属に浸漬
するように前記シールチャンバに内装した１対のバッフ
ルと、前記双方の隙間にそれぞれ連結した溶融金属可溶
ガス供給手段とを具備したことを特徴とする双ドラム式
帯板連続鋳造装置。1. A molten metal pool formed by a pair of rotating cooling drums and a pair of side dams is covered with a seal chamber and sealed with an inert gas, and a molten metal is continuously supplied to continuously form a strip plate. In a casting apparatus, a gap through which a gas can flow is formed between the cooling drum and the outer peripheral surface of each cooling drum, and the opening of the gap is provided inside the seal chamber so as to be immersed in the molten metal in the pool. A twin-drum type continuous strip casting apparatus comprising: a pair of baffles described above and a molten metal-soluble gas supply means connected to both gaps.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8451089U JPH072130Y2 (en) | 1989-07-20 | 1989-07-20 | Twin-drum type continuous strip casting equipment |
| US07/554,190 US5103895A (en) | 1989-07-20 | 1990-07-17 | Method and apparatus of continuously casting a metal sheet |
| AU59156/90A AU616848B2 (en) | 1989-07-20 | 1990-07-19 | Method and apparatus of continuously casting a metal sheet |
| CA002021589A CA2021589C (en) | 1989-07-20 | 1990-07-19 | Method and apparatus of continuously casting a metal sheet |
| KR1019900011086A KR950001385B1 (en) | 1989-07-20 | 1990-07-20 | Method of and apparatus for continuously casting a metal sheet |
| ES90307958T ES2045817T3 (en) | 1989-07-20 | 1990-07-20 | METHOD AND APPARATUS FOR THE CONTINUOUS CASTING OF METAL SHEET. |
| EP90307958A EP0409645B1 (en) | 1989-07-20 | 1990-07-20 | Method and apparatus of continuously casting a metal sheet |
| BR909003531A BR9003531A (en) | 1989-07-20 | 1990-07-20 | METHOD AND APPLIANCE FOR CONTINUOUS METAL SHEET FOUNDATION |
| DE90307958T DE69004365T2 (en) | 1989-07-20 | 1990-07-20 | Method and device for the continuous casting of sheet steel. |
| US08/042,860 US5368088A (en) | 1989-07-20 | 1993-04-05 | Apparatus of continuously casting a metal sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8451089U JPH072130Y2 (en) | 1989-07-20 | 1989-07-20 | Twin-drum type continuous strip casting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0324350U JPH0324350U (en) | 1991-03-13 |
| JPH072130Y2 true JPH072130Y2 (en) | 1995-01-25 |
Family
ID=31633043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8451089U Expired - Lifetime JPH072130Y2 (en) | 1989-07-20 | 1989-07-20 | Twin-drum type continuous strip casting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH072130Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2732627B1 (en) * | 1995-04-07 | 1997-04-30 | Usinor Sacilor | METHOD AND DEVICE FOR ADJUSTING THE BOMB OF THE CYLINDERS OF A CASTING SYSTEM OF METAL STRIPS |
| JP4610787B2 (en) * | 2001-05-18 | 2011-01-12 | 三菱重工業株式会社 | Twin drum continuous casting machine |
| JP2003266153A (en) * | 2002-03-14 | 2003-09-24 | Nippon Steel Corp | Method for casting thin cast slab with twin-drum type continuous casting machine |
-
1989
- 1989-07-20 JP JP8451089U patent/JPH072130Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0324350U (en) | 1991-03-13 |
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